Automatic car-brake



(No Model.) Y v E. BBI.

AUTOMATIC GAR BRAKE.

Patented July 29, 814.

ij www N A :frs-3555555.

N. PETERS. Pmla-Uahngnpher. washington. D. c.

Darren Straaten artnr rtree,

EDVARD EBI, 0F CEDAR RAPIDS, IOVA.

AUTOMATIC CAR-BRAKE.I

ESFECIFICATION forming part of Letters Patent No. 302,716, dated July29,1884. Application nica March 7, leer. (No monti.)

To @ZZ whom, it may concern:

Be it known that I, EDWARD EBI, of Cedar Rapids, in the county oi" Linnand' State of Iowa, have invented a new and Improved AutomaticCar-Brake, of which the following is a full, clear, and exactdescription.

The object of my invention is to provide a' new and improved ear-brake,by means of which all the brakes of a train can be applied automaticallyby the momentum of the cars when the engineer desires it.

rIhe invention consists in the construction and arrangement of parts, aswill be hereinafter fully 4described and claimed.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in both the figures.

Figure l is a longitudinal partly sectional elevation of my improvedcar-brake, showing it applied on a car and tender. Fig. 2 is an enlargedlongitudinal view of the brake-operating mechanism.

A bar, A, is held to slide longitudinally under the tender B in hangersC, projecting downward from the bottom of the tender, which bar isprovided at its rear end with a head, D, and at its front end it ispivoted to a lever, E, pivoted in the bottom of the tender.

On the upper edge of the bar A a rack, F, is formed, at the front end,above which rack a locking-pawl, G, is pivoted in the front hanger, C,which pawl is pivoted at its front end to a rod, H, projecting upthrough the bottom of the tender, and provided on its top with afoot-plate, H. The said rod H is surrounded by a spring, H2, whichpresses it upward. l

In place of the rack and the above-described Vlocking device, the leverE can be provided with any of the well-known locking devices. On theouter cross-beam, I, of each truck of each car a lever, J, is pivoted,which levers have the upper or inner ends connected by a rod, K,extending longitudinally under the bottom of the car, which rods passloosely through rods or hangers K. To the opposite endof each lever J ashort rod, L, is pivoted, which projects toward the endof the car, isheld in a hanger, L, and is provided at its outer end with a head orbuffer-plate, D, on

the same level with the head D on the bar A under the tender and theheads D on the otherl cars.

Io the hanger K two springs, M, are fastcned, which have their oppositeends e0nneeted by chains or directly with the rod K at opposite sidesofthe said hanger K.

A pulley, N, is pivoted in hangers on the bottom of the ear, and overthe said pulley a chain, Q, passes, which has its opposite end connectedwith the upper end of a brake-lever, R, connected with the brake-shoesI. A chain, O, is also connected with the lever It and with the rod K,the cha-ins O and Q crossing each other, as shown in the drawings. Ifdesired, the chains O and Q can be connected with a spring, S, securedto the upper end of the lever R, as shown in Fig. 2.

The operation is a follows: If the engineer wishes to check the speed ofthe train, heV swings the upper end of the lever E in the directiontoward the front end of the tender, whereby the rear end ofthe bar A isprojectedfrom the rear end of the tender., and if the speed of theengine is suddenly checked the momentum of the cars forces them forward,whereby the heads D of the several cars come in contact, and whereby therods K are moved in the direction of the arrows a. Thereby each chain Qis pulled in such a manner that itpulls the upper end of the brake-leverR in the direction of the arrow b, thereby pressing the brake-shoesagainst the wheels. If the train moves in the inverse direction of thearrow c', the locomotive being at the front, as then moving, the rods Kare moved in the inverse direction of the arrow cf and pull on thelevers R by means of the chains O. If the brakes are to be released, thepawl Gis disengaged from the rack C, or the lever E is unlocked in anyother suitable manner, and the upper end o1' said lever E is movedtoward the rear end of the car, whereby the bar A is drawn back. Thesprings M, acting on the rods K, bring them back to the normal position,ready for again applying the brakes.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. The combination of a tender with the bar A, held to slidelongitudinally beneath IOO the same, and .provided at its front end witha buffer, D, a hand-lever, E, pivoted to the rear end of said bar, andalso pivoted to the tender above the bar, and a locking-pawlconstructed4 to engage said bar, substantially as set forth.

2. The combination, with a tender, of the longitudinal sliding toothedbar A, mounted in slotted hangers C, and provided with a buffer, D,atits front end, and pivoted to the pivoted hand-lever, as shown, paWlG, pivoted Within the rear hanger, C, over the rod A, and aVertioally-sliding spring-operated rod, H, pivoted to said pawl, andextending up through the tender-platform, substantially as shown anddescribed.

3. The combination, with a car, Of the levers J, pivoted On the frontbar of the trucks, the rod K, connecting them, the bars L, having headsD and chains for connecting the said,

rods with the brake-lever B, substantially as herein shown anddescribed.

4. The combination, with a car, of the 1evers J, pivoted on the frontbars of the trucks, the bars L, the rods K, connecting them, and thesprings M, for bringing the bars K back into the normal position,substantially as herein shown and described. y

5. The combination, with a car, of the 1evers J, vpivoted on the frontbars ofthe trucks, the rods K, connecting them, the bars L, the pulleyN, the chains O and Q, and the brakelever R, substantially as hereinshown and described.

6. The combination, with a oar, of the levers J, the rods K, the pulleyN, the brakelevers R, the chains O and Q, and the spring S,substantially as herein shown and described.

EDWARD ERI.

Witnesses:

J ORN B. BUTLER, J. B. MOORE.

